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Posted to jira@arrow.apache.org by "Bruno LE HYARIC (Jira)" <ji...@apache.org> on 2020/12/28 00:48:00 UTC

[jira] [Created] (ARROW-11044) [C++] Add "replace" kernel

Bruno LE HYARIC created ARROW-11044:
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             Summary: [C++] Add "replace" kernel
                 Key: ARROW-11044
                 URL: https://issues.apache.org/jira/browse/ARROW-11044
             Project: Apache Arrow
          Issue Type: New Feature
          Components: C++
            Reporter: Bruno LE HYARIC


Purpose a "replace" compute kernel which could fulfil ARROW-10641 - [C++] A "replace" or "map" kernel to replace values in array based on mapping ([@jorisvandenbossche|https://github.com/jorisvandenbossche]). The implementation is inspired by "fill_null" kernel except it takes an additional BooleanArray parameter which is used as a mask to trigger value replacement.
*WARNING:* the current implementation expects all null values to be replaced in the output (corresponding bit set to 1 in input mask) because it will not carry nulls into the output (feel free to share your thoughts on the current implementation and to give me hints on the easiest way to deal with nulls that should make it in the output).



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